The present invention is directed to a cover assemblies for use with containers such as large dumpsters or roll-off containers. The cover assembly generally includes a cover portion, a frame portion, and one or more mounting arms. The cover is coupled to the frame, and the frame is movable with respect to the mounting arm from a first position to a second position, wherein the first position comprises a closed position and wherein the second position comprises an open position.

A container or pod is specially constructed for hauling proppant in support of oilfield hydraulic fracturing operations. Dimensions are provided that comport with common dimensions in use for transportation of intermodal containers, with the containers being sized so as not to require special permitting from a regulatory standpoint when two such containers are loaded on a single trailer. A method of filling the containers is also provided, which include inverting the container to fill from a bottom gate that also serves as the discharge opening when the filled container is rotated back into an upright position.

An apparatus for the transport and storage of proppant has a container with a top wall, a pair of end walls and a pair of side walls. The pair of side walls extend between the pair of end walls. The container has a bottom discharge opening. The container includes a funnel extending from the pair of side walls and from the pair of and walls toward the bottom discharge opening. The funnel has sides extending in an angle of greater than 25 with respect to horizontal. The funnel includes a pair of side plates extending respectively from the pair of side walls toward the bottom discharge opening and a pair of end plates extending respectively from the pair of end walls toward the bottom discharge opening. Each of the side plates and the end plates is formed of a stainless steel material.

A device is provided for layered manufacture of at least a three-dimensional product by an additive manufacturing technique based on a powder. The invention therefore relates to a device for the layered manufacturer of a product based on a powder, in particular a metal powder. This device is fitted with a build chamber with a vertically movable build platform on which said product is manufactured and contains a powder dispenser for application of the successive powder layers on the build platform in a horizontal build surface. The powder dispenser can be moved back and forth over the build surface along a horizontal dispensing direction in order to apply said powder layers. Moreover, the device contains a hopper that must contain said powder in order to supply powder to the powder dispenser. This hopper has a bottom with a dosing opening that lets out into the build chamber and that works in combination with a dosing valve. More specifically, the dosing valve enables a measured quantity of powder to flow out of the hopper.

This disclosure provides a discharge actuation apparatus that is configured to not only fully open and close a sliding gate of a bulk material container, but also move the gate pin to a neutral position with respect to a keeper slot of the bulk container and a receiver slot of the discharge actuation apparatus to ensure proper alignment of the receiver slot and the keeper slot with the gate pin of the bulk container to reduce the likelihood of damage to the receiver or the bulk container during the container's replacement on to the receiver.

Methods for handling bulk material in a manner that reduces dust, noise, and emissions are provided. The presently disclosed techniques use portable containers to transfer bulk material from a transportation unit to a blender inlet. The containers may be carried to the location on the transportation unit, where a hoisting mechanism is used to remove the container from the transportation unit and place it in a desired location. When bulk material is needed at the blender inlet, the hoisting mechanism may position the container of bulk material onto an elevated support structure. Once on the support structure, the container may be opened to release bulk material to a gravity feed outlet, which routes the bulk material from the container directly into the blender inlet. The disclosed containerized bulk material transfer system and method allows for reduced dust, noise, and emissions on location.

Bins for storing and/or dispensing a material, such as preferably a flowable material. In some embodiments, the bin may comprise a body comprising an inner storage chamber configured to receive and store a flowable material therein. A forklift base may be coupled to the body and may comprise one or more pairs of forklift slots configured to receive forks of a forklift to allow the storage bin to be lifted and transported. A dispensing gate may be slidably positioned adjacent to a dispensing opening in the body to allow for positioning between a closed configuration in which the flowable material is blocked from being dispensed from the inner storage chamber and an open configuration in which the dispensing gate is moved away from the dispensing opening to allow the flowable material to exit the inner storage chamber.

A cover assembly for a container including a frame having a rail, a cover coupled to the frame, a first opening mechanism including a first pivot and a first slide housing, and a second opening mechanism including a second pivot and a second slide housing, the rail of the frame being selectively and slidingly receivable in the first and second slide housings. The cover and frame are movable between three positions, a closed position, a first open position wherein the rail is partially disposed in the first slide housing and is disengaged from the second slide housing, and the frame, cover and first slide housing are rotated about the first pivot, and a second open position wherein the rail is partially disposed in the second slide housing and is disengaged from the first slide housing, and the frame, cover and second slide housing are rotated about the second pivot.

Bins for storing and/or dispensing a material, such as preferably a flowable material. In some embodiments, the bin may comprise a body comprising an inner storage chamber configured to receive and store a flowable material therein. A forklift base may be coupled to the body and may comprise one or more pairs of forklift slots configured to receive forks of a forklift to allow the storage bin to be lifted and transported. A dispensing gate may be slidably positioned adjacent to a dispensing opening in the body to allow for positioning between a closed configuration in which the flowable material is blocked from being dispensed from the inner storage chamber and an open configuration in which the dispensing gate is moved away from the dispensing opening to allow the flowable material to exit the inner storage chamber.

The present invention corresponds to materials storage devices; specifically to a specialized container for the storing of granulated raw materials and its operations support base; which has been created in response to the need of storing granulated raw materials, preferably silica meant to be used in, preferably but not limited to, petroleum wells; and which is fitted with specific modifications that facilitate both the loading and discharge of said raw materials in a shorter time lapse than that displayed by conventional technologies. The invention's preferred configuration contemplates the setting up of three containers on top of the operations support base.